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0
votes
Air was passed through reagents as shown below.
answered
Jul 5, 2021
in
Chemistry Form 1
air and combustion
0
votes
Explain why hard water flowing in lead pipes may be safer for drinking than soft water flowing in the same pipes
answered
Jul 5, 2021
in
Chemistry Form 3
acid bases and salts
0
votes
In terms of structure and bonding, explain why propane (RMM=44 ) is a gas at room temperature while ethanol (RMM=46) is a liquid at room temperature
answered
Jul 5, 2021
in
Chemistry Form 3
organic chemistry
0
votes
In an experiment to determine the solubility of solid W in water at 400c, the following results were obtained.
answered
Jul 5, 2021
in
Chemistry Form 1
salts
solubility
0
votes
Define solubility.
answered
Jul 5, 2021
in
Chemistry Form 2
salts
solubility
0
votes
Study the flow chart below and use it to answer the questions that follow.
answered
Jul 5, 2021
in
Chemistry Form 2
carbon
0
votes
The diagram below shows an experiment involving chlorine water.
answered
Jul 5, 2021
in
Chemistry Form 3
chlorine and its compounds
0
votes
Highlight the steps followed when lighting a Bunsen burner
answered
Jul 5, 2021
in
Chemistry Form 1
introduction to chemistry
0
votes
With the aid of a well labeled diagram, show that the almost colourless region of a non luminous flame consist of unburnt gases
answered
Jul 5, 2021
in
Chemistry Form 1
air and combustion
0
votes
State one use of radioactivity in agriculture.
answered
Jul 5, 2021
in
Chemistry Form 4
radioactivity
uses
0
votes
A radioactive isotope M decays by emitting two alpha and a beta particle to form 206 83Y.
answered
Jul 5, 2021
in
Chemistry Form 4
radioactivity
0
votes
A student burnt magnesium ribbon in a gas jar full of sulphur (IV) oxide gas.
answered
Jul 5, 2021
in
Chemistry Form 1
sulphur and its compounds
oxidation
0
votes
Given that the structure of soap is C17H35COONa.
answered
Jul 5, 2021
in
Chemistry Form 4
soaps
0
votes
A student fetched water from a river in a limestone area. He used it for washing and realized that it did not lather easily. On boiling, the water lathered easily .When he added washing soda, it again lathered easily
answered
Jul 5, 2021
in
Chemistry Form 4
soaps
0
votes
100cm3 of Carbon (IV) Oxide diffuses through a porous plate in 30 seconds. Calculate the time taken by 75cm3 of Nitrogen (IV) Oxide to diffuse through the same plate under similar conditions. (C = 12, 0 = 16, N = 14)
answered
Jul 5, 2021
in
Chemistry Form 1
diffusion
0
votes
State Graham’s law of diffusion.
answered
Jul 5, 2021
in
Chemistry Form 3
diffusion
graham's law
0
votes
A solution contains 5.3g of X2CO3 in 500 cm3 of solution. 25.0 cm3 of this solution required 20.0 cm3 of 0.25M hydrochloric acid for complete neutralization. The equation for the reaction is;
answered
Jul 5, 2021
in
Chemistry Form 3
moles
the mole formulae
0
votes
Study the following equilibrium equation.
answered
Jul 5, 2021
in
Chemistry Form 4
moles
energy
0
votes
The set up below was used to prepare dry hydrogen gas. Study it and answer the questions that follow.
answered
Jul 5, 2021
in
Chemistry Form 1
water and hydrogen
0
votes
Study the equation below and answer the questions that follow:
answered
Jul 5, 2021
in
Chemistry Form 3
organic chemistry
carbon
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